I know that 32-bit operating systems can only detect up to 4GB and tend to show a little less because some gets reserved for other things, but I installed 32-bit XP on a system with 8GB of RAM, and the General tab of System Properties says I only have 1.91GB, and I see something similar in Task Manager. Running CPU-Z shows I have 4 sticks of 2GB plugged into each slot, and I see the same when I boot up. Why is only one stick out of four being detected, is there something I can do to fix this short of opening up the PC and taking sticks out? The inside of my case is kind of annoying to gain access to.

It's the system in my "System Specs" thing on my profile here, but XP 32 bit, not Windows 7 64-bit. For the record, everything was fine with all sticks of RAM earlier in the day when I was still using Windows 7 64-Bit.

Yes, all these "1GB" versions of new cards (now that memory is so cheap, why don't OEMs just make 2GB cards?) are essentially designed for peeps with 32-bit systems.

I gained and extra 4GB of memory space, (on an 8GB 32-bit system giving me access to just 3.5GB) by installing a gigabyte iRAM system and putting the pagefile on it. Windows is executed with the /PAE option.

Yes, all these "1GB" versions of new cards (now that memory is so cheap, why don't OEMs just make 2GB cards?) are essentially designed for peeps with 32-bit systems.

I gained and extra 4GB of memory space, (on an 8GB 32-bit system giving me access to just 3.5GB) by installing a gigabyte iRAM system and putting the pagefile on it. Windows is executed with the /PAE option.

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Interesting... so I could use the extra GB of RAM that goes missing in XP 32bit?